The body mass index (BMI), or Quetelet index, is a heuristic proxy for human body fat based on an individual▽s weight and height.

SI units:
BMI=mass(kg)/((height(m))²
Imperial/US Customary units:
BMI=mass(lb) x 703/((height(in))²
BMI=mass(lb) x 4.88/((height(ft))²
BMI=mass(st) x 9804/((height(in))²

• BIA
  We have based our body fat percentage measurement on the principle of the BIA (electric impedance analysis).Body impedance is measured when a small and safe electronic signal is passed through the body; Impedance is greatest in fat tissue, while fat-free mass allows the signal to pass much more easily. By using the impedance measurements along with a person▽s height, weight, age and gender, the body fat percentage can be calculated.
• Body fat percentage is affected by body hydration. Several hours after getting up, body fat percentage will be changed as the body water hydration changes as well. To assure the accuracy of body fat percentage, we advise to measure in the evening. There will be a slight difference in the figure of the body fat percentage when you weigh yourself at different times of the day. Measuring under consistent conditions (same time of the day and same conditions) will obtain the best results.

Body fat percentage chart of day:



OperationInitial Set Up

1. When in the first use, please pull out the battery insulating strip.
2. Place the scale on a hard and flat surface to ensure the greatest accuracy and reliability.
3. Choose a memory number (from 1 to 10). Press "on/set" to start and the scale will show the memory number (1 to 10) and choose the number by pressing "up" or "down", then press "on/set" to confirm.
4. Input gender Press "up" or "down" to choose and then press "on/set" to confirm.
5. Input age Press "up" or "down" to adjust age (10 to 99 years old) and then press "on/set" to confirm.
6. Input height Press "up" or "down" to adjust height (100 to 240cm) and then press "on/set" to confirm.
7. Afterwards the scale will show the memory number (XX) again and you can set the parameter for another person.
8. All parameters will be saved after they are set.


Measuring



• 1. Press "on /set" to start and "1-10" will display on the LCD. After a few seconds, "0.0kg" will display.
• 2. Press "up" or "down" to choose your memory number (1 to 10) and then press "on/set" to confirm. The system will display your gender, age, and height for your confirmation. If they are incorrect, reset the scale. If correct, about 3 seconds later, it will display "0.0" and you can have your weight, FAT and TBW measurement.
• 3. When the scale displays "0.0", you can stand on the scale and it will display your weight. Continue standing on the scale and the display will first show *****, and then: your body fat(FAT).
• 4. The display will show your fat (FAT).
• 5. The display will show your body water (TBW).
• 6. Display your BODY FAT RATIO after comparing your body fat.

Reference Information

The evaluated body fat result is based on a standardized measuring method. It is calculated by a correlated formula developed on basis of extensive scientific studies. The hydration content in the lean muscle affects measuring result. Individual habits and lifestyle will affect balance of hydration level. Other factors, like followings may affect balance of hydration level:

• A. After a bath, reading can be lower.
• B. After a meal or drinking readings can be higher.
• C. During ladies menstruation period can be fluctuated/inconsistent.
• D. Loss of water by illness, strenuous physical activities that cause heavy sweats and dehydration.
• E. Table below given estimate physical status relating to the indicated Fat%/Water% from the scale:

FAT & Water Comparison Chart:





BONE MASS

Bone health is important so that your bones will be healthy and strong throughout your lifetime. It is especially important to build strong and healthy bones in the childhood and teen years to avoid osteoporosis and other bone problems later in life. Osteoporosis is a condition in which bones are fragile, making them fracture or break much easier. Taking care of your bones when you▽re young will help prevent problems in the future.

Bone Mass Chart:



MUSCLE MASS

Building muscle can offer many health benefits such as increased bone, muscle, tendon and ligament strength, improved joint function and stability, increased metabolism and better heart function.

Muscle Mass Chart:



Please read following notes carefully for proper understanding of the application/significance of the device

• 1. The Fat%/Water% content evaluated by the Fat Monitor Scale is only for reference. The physical outlook of body does not necessary give congruent Fat%/Water% readings, not the same physically built persons of same age and sex should give the same readings. Please consult one▽s doctor to determine best the condition of body Fat/Water percentage that one should achieve.
• 2. Body Fat Scale is not suitable for use people of following conditions:
  
  • Children under 10, and adult over 80
  • People with symptoms of fever, edema, osteoporosis.
  • People on dialysis treatment.
  • People taking cardiovascular medicine.
  • Being Pregnant
  • Athletes who undertake more than 10 hours of intensive sport activity.
  • Those with heart pulse rate under 60 bests/minutes.
• 3. Pacemaker users /wearers,  are not recommended to use this Scale. Implant performance may be jeopardized and impaired.
• 4. To prevent interference, do not use the device in environment near equipment with strong electro-magnetic field. Always keep a good distance form such equipments when operating the scale, or simply turn off those equipments radiating strong electro-magnetic fields before operation.

Notes: Try not to weigh by putting the scale on a hard board instead of the carpet.

FEATURES

• 100% guaranteed for craftsmanship and quality
• Wide LCD screen display
• Automatically lock the reading when data is stable
• Auto-off function,automatic zero resetting, overload indicator
• The scale will automatically switched off when it is in non-use condition in order to save power
• Safety tempered glass platform
• With body weight body fat, body water, body bone, body muscle, 10-user memories

Specifications

Package Includes

• 1 x 180Kg 396LB Digital BIA Fat Monitor Scale Body Mass Index BMI/Fat/Water/Bone/CAL/Weight (10 Users) HJ-BF003A

Extra Info

Attention:

• 1.Body Fat Scale is not suitable for use people of following conditions:
• 1)Children under 10,and adult over 80.
• 2)People with symptoms of fever,edema,osteoporosis.
• 3)People on dialysis treatment.
• 2.The scale platform is glossy, be careful not to slip. The scale platform should be keep dry when weighing.
• 3.When in proper use, this product only bears static pressure. When in improper use and get the impact, hit or drop, the scale is very easy to be damaged and the glass will be broken which is dangerous.
• 4.Do not use any chemical cleanser to clean the scale. Clean your scale with a damp cloth, but do not immerge your scale into any liquid, as this can damage the inner parts.
• 5.To ensure the life of scale, please do not place scale in over-heated environment.
• 6.Do not store the scale in upright position but in horizontal position.
• 7.Remove the batteries if the scale is not being used for a long time.
• 8.If the scale can not be displayed, check whether the bad battery or contacts. If the scale has been used for a long time, may need to replace batteries. If necessary, contact your local dealer or call our company.
• 9.This scale is only used in household for measurement, not for commercial or other use.